Automatic oiler for manufaclly actuated pipe threading tool



Dec. 29, 1964 R. A. ADELMAN AUTOMATIC OILER FOR MANUALLY ACTUATED PIPE THREADING TOOL Filed Jan. 2,

INVENTOR. Pager ,0. flde/man BY United States Patent r 3,162,872 AUTOMATIC fill- ER 50R MANUALLY ACTUATED PEPE THREADWG TGOL Roger A. Atlehnan, 6623 Wabash, Kansas City, Mo. Filed Jan. 2, 1962, Ser. No. 163,578 6 Claims. (Ql. 19-126) This invention relates to an oiler attachment for threading machines, and more particularly, to an automatic oiler attachment for conventional, manual, portable diestocks for threading pipes, rods, stock and the like.

It is the primary object of this invention to provide an automatic oiler attachment which may be quickly and easily secured to all conventional, portable, manual threading machines with minor adjustmentswhereby, upon.op eration of the machine, the oiler attachment will be automatically operated to deliver oil upon the pipe or stock being threaded.

Various devices for applying oil to pipe or stock as it is being threaded have been developed in the past, but none of said devices is universally adaptable to conventional, manual threading machines, and in most instances, oil is delivered to the pipe or stock being threaded by such machines by the operator thereof through the use of an ordinary oil can.

Accordingly, it is an important aim of this invention to provide an automatic oiler attachment for such threading machines, which oiler may be externally attached to said machines, and which is of such a nature that oil will be automatically delivered to the pipe or stock being threaded upon operation of the machine without additional motion by the operator of the machine other than the ordinary steps involved in the operation thereof.

A yet further aim of this invention is to provide an automatic oiler attachment for threading machines which delivers oil under full pressure and does not rely upon gravity flow, and which attachment is capable of delivering oil onto the pipe or stock being threaded regardless of the position or disposition of the machine itself and the attachment carried thereby.

A yet further aim is to provide an automatic oiler for threading machines having a handle, a cutting head and a chuck or guide, the oiler attachment including pistonactuating means carried by the machine and an oiler body adapted to be carried by the handle of the machine, the said handle being hollow and serving as an oil reservoir, there being passageways in the oiler body in communication with the reservoir whereby to allow oil to move therethrough upon actuation of a pumping piston which is carried by the body and which is operated by said means during the normal course of operation of the machine.

Yet another object of this invention is to provide an oiler attachment for automatic threading machines including an oiler body, which body includes a pump body portion and a nozzle body portion, said portions being disposed on opposite sides of the handle of the machine, the pump body portion having an aperture therein which receives a piston, the piston being operable by means of a cam which is secured to the cutting head of the machine, said piston serving to pump oil from a reservoir therefor in the handle of the machine, through the oiler body portion to a point of delivery upon the pipe or stock being threaded.

Other objects will become apparent from the following specification and accompanying drawing, wherein:

FIGURE 1 is a fragmentary, front elevational view of a threading machine showing the attachment carried thereby;

FIG. 2 is a rear elevational view of a threading machine having the subject attachment carried thereby;

FIG. 3 is a side elevational view thereof;

FIG, 4 is a fragmentary, substantially central sectional view taken on line 4-4- of FIG. 1; and

FIG. 5 is a sectional viewtaken on line 5-5 of FIG. 4.

The automatic oiler attachment includes as its primary components, a cam ill and an oiler body 12, said cam 10 and body 12 being adapted for attachment to a conventional, manual, portable pipe or stock threading machine 11 which includes a handle 14, a cutting head 16 and a chuck or guide 18.

Machines such as 11 are normally used by plumbers, pipe fitters and the like in the field to thread pipe or stock as it is needed on the job and such machines are well known in the art. It is contemplated that the oiler attachment may be secured to any type of such machine through slight modifications therein, the particular threading machine 11 chosen for illustration being designated as a Ridgid pipe threader and being manufactured by Ridge Tool Company and designated as Model 65R. Manifestly, this particular machine is chosen for purposes of illustration only and it will be appreciated that the instant attachment may be utilized in connection with any conventional, portable, manual pipe or stock threading machine.

The cam 10 is adapted to be secured to the cutting head 16 by means of spacer sleeves 2t? and bolts 22 whereby to space the cam lltl from the face of said cutting head 16. Said cutting head 16 will normally include cutting dies 23 and a ratchet mechanism designated as 24, said mechanism 24 allowing return of the dies 23 to an initial cutting position after a cut has been made.

As is evident, the cam 10 is substantially annular in plan configuration, the outermost peripheral edges thereof having a plurality of undulations formed therein whereby to create depressions 26 and ridges 28.

The oiler body 12 is adapted to be carried by the handle 14 of the machine 11 and includes a pump body portion 30 and a nozzle body portion 32, said portions being secured together as by fastening bolts 34 on opposite sides of handle 14, all as is clearly illustrated in PEG. 4 of the drawing.

Pump body portion 39 has a first passageway 36 formed therein, said passageway being in communication with a second oil reservoir 38 formed in hollow handle 14 by means of a wall 4% and a tube 42. The opposite end of handle 14 constitutes a first oil reservoir 44 which is in communication with second reservoir 38- by means of tube 42. in the manner shown in FIG. 4 of the drawing.

Passageway 35 extends throughout the length of pump body portion 30 and is closed at its outermost end by a plug 46, the opposite end thereof having a sleeve 48 disposed therewithin at its point of juncture with handle 14 whereby to insure a tight, leak-proof fit between said passageway 36 and second reservoir 38.

Extending laterally from passageway 36 is an aperture 50 formed in body 3%, said aperture extending outwardly through a boss 52 which is formed integrally with pump body portion 39.

A piston 54 is disposed within aperture 54 said piston 54 being normally biased outwardly by means of a coil spring 56 which surrounds a portion of piston 54 and rests upon a washer 58 which also surrounds piston 54 and which rests upon a shoulder 60, said shoulder being formed at the point of juncture between boss 52 and body 30. Within body 3%, piston 54 i surrounded by a sleeve 62 and a sealing washer 64 whereby to prevent oil from passing through aperture 5i) and out of body 12. A ball check valve 66 is carried Within passageway 36, the same being held in position by spring 68, the ball check valve 66 being disposed within passageway 36 for the purpose of preventing the return of oil to reservoir 38 during the pumping action of piston 54.

Also formed in pump body portion 30 is a lateral passageway 70 as best seen in FIG. 5 of the drawing, said passageway 79 being closed at its outer end by a plug 72, which plug 72 supports a spring 74, the latter serving to hold a ball check valve 76 in position at the point of juncture between passageway 36 and passageway 70.

A11 elongated passageway 78 extends from passageway 70 in substantially parallel relationship to passageway 36, said passageway 73 being in pump body portion 30 and meeting at the end thereof opposite to passageway 70, a passageway 89 formed in nozzle body portion 32,

said passageway 80 being in efiect, a continuation of passageway 78. At the point of juncture between passageways 78 and 80, there is provided a sleeve 82 which insures a pressure-tight fit between the mating body portions 30 and 32.

Passageways 36, 70, 78 and 80 are, in the position illustrated in the drawing, disposed substantially horizontally and ultimately communicate with a vertical passageway, which passageway 84 extends the full length of nozzle body port-ion 32 terminating in nozzle tip 86. As is apparent from FIGS. 2 and 3 of the drawing, the nozzle tip 86 is disposed in a position with respect to machine 11 whereby oil, when pumped through the passageways above described and out of nozzle tip 86, will the delivered onto the pipe ibeing threaded by machine 11.

The above mentioned pumping is accomplished by piston 54, which piston 54 is operated by cam through means of a rider roller 88 carried at the outermost end of piston 54 by a substantially L-shaped bracket 94 As best seen in FIGS. 1 and 3 of the drawing, rider roller 88 is in engagement with the outer peripheral edge of cam 10 and, as is obvious, the rider roller 8% will follow the undulated peripheral edge of earn 1% and thus cause the reciprocation of piston 54- as a result of the depressions 26 and ridges 28 in the peripheral edge of cam 10.

The subject attachment is, by virtue of the construction of hollow handle 14, usable in any position, it being appreciated that even if the machine were being used over ones head, oil would nevertheless be retained in secondary reservoir 38 whereby the same would be pumped therefrom, notwithstanding the inverted position of the machine. However, in normal operation, the reservoir 38 will be full as will a substantial pontion of the reservoir 44, and oil will be drawn oil of said reservoir by the pumping action of piston 54 in the manner hereinabove described.

In operation, it will be appreciated that handle 14 will first be filled with oil and closed by a cap such as 92, a length of pipe or stock (not shown) being then inserted in the machine 11 and held in position by means of chuck or guide 18, the end of the pipe or stock to be threaded being substantially disposed within the confines of cutting head 16. As the machine is operated, as for instance, by swinging the handle 14 in FIG. 3 away from the operator, the cutting head 16 and the cam 10 would rotate and the oiler body portion 12 would move away from the operator as a result of being carried by handle 14. Thus, the first cut would be a *dry operation, but, upon movement of the handle 14 toward the operator, the cam 10 and cutting head 16 would retain their positions, the return of the handle 14 being allowed as a result of ratchet mechanism 24. Upon this return stroke of the handle, the oiler body 12 would move with the handle and accordingly, rider roller 83 would move along the peripheral, undulated edge of cam 10 causing pumping movement of piston 54 and 7 thus delivering oil from reservoir 38 through passageways 36, 70, 78, and 84 to nozzle tip 86 and thence upon the pipe or stock being threaded. Subsequent to returning the handle to its substantially vertical position, the next but could be made and this cutting operation would be facilitated by the oil which had been placed upon the pipe as a result of the return stroke of handle 14 and the pumping operation accomplished during this return stroke as above described.

Thus, it is seen that there is provided an oiler attach ment for manual, portable pipe or stock threading machines, which attachment can be quickly and easily secured to such machines and which is fully automatic in its operation during the normal course of use of a threading machine such as 11.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

1. An oiler attachment for manully operated pipe threading machines having a cutting head and a chuck, said attachment comprising: a hollow handle defining a chamber; a wall dividing said chamber into a first oil supply reservoir at one end of the handle and a second oil supply reservoir at the other end of the handle, there being a tube placing said reservoirs in communication; said tube being positioned in the secondary reservoir in such a manner as to prevent the passage from' the secondary reservoir into the first reservoir of a major portion of the oil previously delivered into said secondary resenvoir; an oiler body secured to said handle, said body having passageways formed therein and in communication with saidsecond-ary oil reservoir, there being an aperture formed in said body and in communication with said passageway; a'piston disposed within said aperture and extending outwardly from said body; arider roller carried by the outwardly extending end of said piston; a cam carried by said cutting head, said cam being in engagement with said rider roller whereby upon operation of the machine the piston is actuated to pump oil from said secondary reservoir to its point of delivery. I 2. An oiler attachment as set forth in claim 1, there being valves in said passageways whereby toprevent return of oil to the secondary reservoir.

#3. An foiler attachment as set forth in claim I, said oiler body having a pump body portion and a nozzle body portion, said portions being disposed on opposite sides of said handle, and said nozzle body portion being elongated whereby to deliver oil upon the pipe being threaded.

4. An oiler attachment as set forth in claim 1, wherein said cam hasan undulated peripheral configuration.

V 5. An oiler attachment for manually operated pipe threading machines having a cutting head and a chuck, said attachment comprising: a hollow handle defining a chamber; a. wall dividing said chamber into a first oil supply reservoir at one end of the handle and a secondary oil supply reservoir at the other end of the handle; a tube placing said reservoirs in communication, said tube being positioned in the secondary reservoir in such a manner as to prevent the return passage of oil from the secondary reservoir into said first reservoir; an oiler body secured to said handle, said body including a pump body portion and a nozzle body portion, said pump body portion having a first passageway therein in communication with said seoondary reservoir, a second passageway in communication with said first passageway and extending laterally therefrom, and a third passageway in communication with said second passageway, there being an aperture in lateral communication with said first passageway; a piston disposed within said aperture; a roller on one end of said piston and disposed exteriorly of said pump body portion, said nozzle body portion having passageways therein in communication with said third passageway at one end thereof, there being a nozzle tip at the opposite end of said nozzle body passageway; a cam carried by said cutter head and having a plurality of undulations in its peripheral edge, said edge in engagement with said roller whereby upon operation of the machine, the piston is reciprocated to pump oil from said secondary reservoir through said first, second and third passageways, through the passageways in said noz- 5 6 zle body portion and out of said nozzle tip onto the pipe References Cited by the Examiner bemg threaded- UNITED STATES PATENTS 6. An oiler attachment as set forth in claim 5 wherein said first passageway communicates with said Secondary 7/18 M 10-426 reservoir at a point spaced from the delivery end of 5 1877070 9/32 Slegnst 184 '27 said tube communicating Said reservoirs and toward said 2,136,121 11/38 westf'ffll 10*126 wall separating the reservoirs whereby a constant supply 2,564,187 8/51 Brenmsh 10 126 of oil through said passageways is available when the oiler is in any position. ANDREW R. JUHASZ, Primary Examiner. 

1. AN OILER ATTACHMENT FOR MANULLY OPERATED PIPE THREADING MACHINES HAVING A CUTTING HEAD AND A CHUCK, SAID ATTACHMENT COMPRISING: A HOLLOW HANDLE DEFINING A CHAMBER; A WALL DIVIDING SAID CHAMBER INTO A FIRST OIL SUPPLY RESERVOIR AT THE HANDLE AND A SECOND OIL SUPPLY RESERVOIR AT THE OTHER END OF THE HANDLE, THERE BEING A TUBE PLACING SAID RESERVOIRS IN COMMUNICATION; SAID TUBE BEING POSITIONED IN THE SECONDARY RESERVOIR IN SUCH A MANNER AS TO PREVENT THE PASSAGE FROM THE SECONDARY RESERVOIR INTO THE FIRST RESERVOIR OF A MAJOR PORTION OF THE OIL PREVIOUSLY DELIVERED INTO SAID SECONDARY RESERVOIR; AN OILER BODY SECURED TO SAID HANDLE, SAID BODY HAVING PASSAGEWAYS FORMED IN SAID BODY AND IN COMMUNICATION WITH SAID SECONDARY OIL RESERVOIR, THERE BEING AN APERTURE FORMED IN SAID BODY AND IN COMMUNICATION WITH SAID PASSAGEWAY; A PISTON DISPOSED WITHIN SAID APERTURE AND EXTENDING OUTWARDLY FROM SAID BODY; A RIDER ROLLER CARRIED BY THE OUTWARDLY EXTENDING END OF SAID PISTON; A CAM CARRIED BY SAID CUTTING HEAD, SAID CAM BEING IN ENGAGEMENT WITH SAID RIDER ROLLER WHEREBY UPON OPERATION OF THE MACHINE THE PISTON IS ACTUATED TO PUMP OIL FROM SAID SECONDARY RESERVOIR TO ITS POINT OF DELIVERY. 